DESCRIPTION

The LTP™8803-1A is a 160A step-down μModule® regulator

that provides microprocessor core voltage from 54V

power distribution architecture. It features remote configurability

and telemetry monitoring of power management

parameters over PMBus—an open standard I2C-based

digital interface protocol.

The LTP8803-1A is comprised of a programmable digital

control system with precision mixed-signal circuitry,

EEPROM, power MOSFETs, planar transformer, inductors,

and supporting components. Its high level of integration

minimizes component count and design time and maximizes

flexibility and power density.

The LTP8803-1A preserves high efficiency at high conversion

ratios by utilizing a resonant switching architecture

that eliminates high voltage switching losses.

The LTP8803-1A is available in a 22mm × 24mm × 22mm

surface-mounted open frame package.

FEATURES

- High Efficiency at High Frequency

- Up to 91.8 Efficiency at 600kHz, 54VIN to 1.2VOUT

- PMBus-Compliant I2C Serial Interface

- Monitor Voltage, Current, Temperature, and Faults

- Internal EEPROM Fault Log Record

- Digitally Programmable Control Loop

- Program Voltage, Current Limits, Soft-Start/Soft-

Stop, Frequency, Synchronization and Phasing,

Power-Good, Warnings and Faults

- Wide Input Voltage Range: 45V to 65V

- Output Voltage Range: 0.5V to 1.5V

- Optimized for 45V to 65VIN to 1.2VOUT

- ±0.5 Maximum DC Output Error with Differential

Remote Voltage Sense

- ±3 Current Readback Accuracy

- Parallel and Current Share Multiple μModule ICs

- Pin Compatible with LTP8800-1A and LTP8800-4A

(Optimized for 0.8VOUT)

- 22mm × 24mm × 22mm Surface-Mounted Package

APPLICATIONS

- High Current Distributed Power Systems

- Servers, Network, and Storage Equipment

- Intelligent Energy Efficient Power Regulation

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